A5049933736- Organic Electronics and Photovoltaics
- Conducting polymers and applications
- Perovskite Materials and Applications
- Thin-Film Transistor Technologies
- Quantum Dots Synthesis And Properties
- Organic Light-Emitting Diodes Research
- X-ray Diffraction in Crystallography
- Crystallization and Solubility Studies
- Gas Sensing Nanomaterials and Sensors
- Ga2O3 and related materials
- Chalcogenide Semiconductor Thin Films
- Nanowire Synthesis and Applications
- Metallic Glasses and Amorphous Alloys
- Luminescence and Fluorescent Materials
- Analytical Chemistry and Sensors
- Magnetic Properties and Applications
- Transition Metal Oxide Nanomaterials
- 2D Materials and Applications
- ZnO doping and properties
- Geological and Geochemical Analysis
- Molecular Junctions and Nanostructures
- Photonic and Optical Devices
- Advanced Photocatalysis Techniques
- Advanced Sensor and Energy Harvesting Materials
- Photonic Crystals and Applications
Hefei Institutes of Physical Science
2022-2025
Jilin University
2016-2025
State Key Laboratory on Integrated Optoelectronics
2016-2025
Chinese Academy of Sciences
2022-2025
Wannan Medical College
2024-2025
Westlake University
2025
University of Science and Technology of China
2022-2024
State Key Laboratory of Supramolecular Structure and Materials
2024
Soochow University
2024
Development Research Center
2021-2023
A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer, which combines efficient trap-passivation and electron-extraction. Perovskite cells IDIC layers yield higher photovoltages photocurrents, 45% enhanced efficiency compared control devices without IDIC.
Organic-inorganic hybrid perovskite (OIHP) photodetectors that simultaneously achieve an ultrafast response and high sensitivity in the near-infrared (NIR) region are prerequisites for expanding current monitoring, imaging, optical communication capbilities. Herein, we demonstrate constructed by OIHP organic bulk heterojunction (BHJ) consisting of a low-bandgap nonfullerene polymer, which broadband spectra up to 1 μm with highest external quantum efficiency approximately 54% at 850 nm, speed...
The instability of hybrid perovskite materials due to water and moisture arises as one major challenge be addressed before any practical application the demonstrated high efficiency solar cells. Here we report a facile strategy that can simultaneously enhance stability p-i-n planar heterojunction-structure devices. Crosslinkable silane molecules with hydrophobic functional groups are bonded onto fullerene make layer highly water-resistant. Methylammonium iodide is introduced in for n-doping...
A self-powered,solution-processed perovskite photodetector with sub-nanosecond response time is presented. Eliminating charge trapping and removing the constraints from resistance-capacitance constant increases speed, which enables them to be applied in a homemade, time-resolved photoluminescence system that successfully resolves decay process of typical fluorescence phosphorescent materials recombination lifetime several nanoseconds microseconds.
Tungsten oxide (WO3) was inserted as an anode interfacial layer between the photoactive and top electrode in inverted polymer solar cells (PSCs) with nanocrystalline titanium dioxide electron selective layer. The device WO3 exhibited a remarkable improvement power conversion efficiency compared that without WO3, which indicated efficiently prevented recombination of charge carriers at organic/top interface. dependence performances on film thickness different metal electrodes investigated....
Semitransparent perovskite solar cells based on smooth films and ultrathin Cu (1 nm)/Au (7 nm) metal electrode demonstrate an efficiency of 16.5%. When illuminated through the semitransparent cell, a near-infrared-enhanced silicon heterojunction cell operates with 6.5% efficiency, leading to total perovskite/silicon four-terminal tandem 23.0%.
Abstract Although three-dimensional metal halide perovskite (ABX 3 ) single crystals are promising next-generation materials for radiation detection, state-of-the-art X-ray detectors include methylammonium as A-site cations, limiting the operational stability. Previous efforts to improve stability using formamidinium–caesium-alloyed cations usually sacrifice detection performance because of high trap densities. Here we successfully solve this trade-off between and by synergistic composition...
Enhancement of Se solubility in organic solvents without the use alkylphosphine ligands is key for phosphine-free synthesis selenide semiconductor nanocrystals (NCs). In this communication, we demonstrate dissolution elemental oleylamine by alkylthiol reduction at room temperature, which generates soluble alkylammonium selenide. This precursor highly reactive hot-injection NCs, such as Cu2ZnSnSe4, Cu(InGa)Se2, and CdSe. case example, as-synthesized NCs possessed small size, high size...
An electrically modulated single-/dual-color imaging photodetector with fast response speed is developed based on a small molecule (COi 8DFIC)/perovskite (CH3 NH3 PbBr3 ) hybrid film. Owing to the type-I heterojunction, device can facilely transform dual-color images single-color by applying bias voltage. The exhibits two distinct cut-off wavelengths at ≈544 nm (visible region) and ≈920 (near-infrared region), respectively, without any power supply. Its peak responsivities are 0.16 A W-1...
Addition of the Ti<sub>3</sub>C<sub>2</sub> into SnO<sub>2</sub> enhanced power conversion efficiency due to good conductivity nanosheets.
Abstract Compared with thin‐film morphology, 1D perovskite structures such as micro/nanowires fewer grain boundaries and lower defect density are very suitable for high‐performance photodetectors higher stability. Although the stability of microwire‐based has been substantially enhanced in comparison that based on practical applications require further improvements to before implementation. In this study, a template‐assisted method is developed prepare methylammonium lead bromide (MAPbBr 3 )...
Abstract Perovskite photodetectors have gradually shown preeminent photoelectric performance due to the unique material properties. In recent years, lots of works been reported in improving sensitivity, changing detection spectrum range and enhancing long‐term stability. Herein, we summarize some efficient strategies for improvement synchronously analyze severe issues exposed that. Furthermore, reasonable proposals are put forward solve future predicted troubles. addition, more prospective...
Ultra-narrow-band NIR photomultiplication organic photodetectors (PM-OPDs) were realized in ITO/PEDOT:PSS/active layers/Al based on an interfacial-trap-induced charge injection narrowing (CIN) concept. The rather less Bod Ethex-Hex (BEH) is imbedded a polymer donor matrix to form large amounts of isolated electron traps. Trapped electrons BEH close Al electrode will enforce hole-tunneling induced by interfacial band bending, resulting phenomenon. PM-OPDs with P3HT:BEH as the active layer...
Organolead trihalide perovskite single crystals (SCs) offer unprecedented opportunity for X-ray and visible light detection. Nevertheless, it remains a challenge to keep simultaneous high-performance stability at high-temperature working mode. Herein, formamidinium lead bromide (FAPbBr3) SCs are developed successfully address these issues. Low-temperature crystallized induced FAPbBr3 possess an excellent mobility-lifetime product ultralow surface charge recombination velocity, thus...
Abstract High‐efficiency perovskite solar cells (PSCs) and organic (OSCs) are promising alternatives for silicon‐based cells. At present, the key point commercialization of PSCs OSCs is realizing large‐scale production while maintaining same high efficiency as small‐area ones. In this review, blade‐coating method preparing large‐area films introduced first recent advances blade‐coated summarized. Then, effects blading parameters on crystal growth film formation light‐harvesting materials...
Abstract Ultraviolet (UV) narrowband photodetectors play a critical role in missile detection, flame monitoring, optical communication, etc. It is great challenge to realize UV organic due wide photo‐harvesting property of materials, especially for photomultiplication type (PM‐OPDs). In this work, smart strategy proposed achieve response by coupling Fabry−Pérot microcavity with PM‐OPDs. PM‐OPDs are realized using poly(3‐hexylthiophene‐2,5‐diyl):[6,6]‐phenyl‐C 71 ‐butyric acid methyl ester...
High-sensitivity organic photodetectors (OPDs) with strong near-infrared (NIR) photoresponse have attracted enormous attention due to potential applications in emerging technologies. However, few semiconductors been reported photoelectric response beyond ~1.1 μm, the detection limit of silicon detectors. Here, we extend absorption small-molecule below bandgap, and even 0.77 eV, through introducing newly designed quinoid-terminals high Mulliken-electronegativity (5.62 eV). The fabricated...
Abstract Detecting short‐wavelength infrared (SWIR) light has underpinned several emerging technologies. However, the development of highly sensitive organic photodetectors (OPDs) operating in SWIR region is hindered by their poor external quantum efficiencies (EQEs) and high dark currents. Herein, high‐sensitivity SWIR‐OPDs with an efficient photoelectric response extending up to 1.3 µm reported. These OPDs utilize a new ultralow‐bandgap molecular semiconductor featuring quinoidal tricyclic...
Abstract Photomultiplication type organic photodetectors (PM‐OPDs) exhibit obvious superiority in weak light detection due to their low dark current density ( J D ) and large photo‐induced PI ). The is one of the important parameters that influences sensitivity PM‐OPDs, how effectively suppress a great challenge improve performance PM‐OPDs. In this work, PM‐OPDs can be suppressed by employing PTAA or doped‐PTAA as interfacial layer replacing PEDOT:PSS layer. with 2.3 × 10 −7 A cm −2 under −6...
Abstract The dissemination of sensors is key to realizing a sustainable, ‘intelligent’ world, where everyday objects and environments are equipped with sensing capabilities advance the sustainability quality our lives—e.g. via smart homes, cities, healthcare, logistics, Industry 4.0, precision agriculture. realization full potential these applications critically depends on availability easy-to-make, low-cost sensor technologies. Sensors based printable electronic materials offer ideal...
Molybdenum trioxide (MoO3) was inserted between the active layer and top electrode in inverted polymer solar cells (PSCs) with nanocrystalline titanium dioxide as an electron selective layer. The performances of structurally identical PSCs different electrodes (Au, Ag, Al) were investigated compared. interface MoO3 metals studied by x-ray photoelectron spectroscopy. results showed that devices are greatly improved due to incorporation open-circuit voltage is relatively insensitive choice...
Polymer solar cells (PSCs) possess the unique features of semitransparency and coloration, which make them potential candidates for applications in aesthetic windows. Here, authors fabricate inverted semitransparent PSCs with high‐quality hybrid Au/Ag transparent top electrodes fine‐tuned dielectric mirrors (DMs). It is demonstrated that device color can be tailored light harvesting enhanced by matching bandgap polymer donors active layer specifically designed...
By using a tetraphenylethene (TPE)-based ligand, tetrakis[4-(4-carboxyphenyl)phenyl]ethene (H4TCPPE), porous metal-organic framework [Zn2(TCPPE)] (1) is synthesized, which exhibits strong fluorescence and capable of gas adsorption sensing volatile organic compounds.